CN101618296A - Liquid processing device - Google Patents
Liquid processing device Download PDFInfo
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- CN101618296A CN101618296A CN200910142592A CN200910142592A CN101618296A CN 101618296 A CN101618296 A CN 101618296A CN 200910142592 A CN200910142592 A CN 200910142592A CN 200910142592 A CN200910142592 A CN 200910142592A CN 101618296 A CN101618296 A CN 101618296A
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Abstract
The present invention relates to a liquid processing device, capable of improving the water processing performance and having economical efficiency by recovering non-dissolved gas to reuse in a minuteness air bubble generating system, wherein the liquid processing device uses minuteness air bubble as an object. The liquid processing device is provided with a first gas mixer (7) for mixing supplied water and gas, a pump (11) for pressurizing a gas-liquid biphase stream of a mixture gas through the first gas mixer (7), a gas-liquid separator (8) for recovering non-dissolved gas from water pressurized by the pump (11), a second gas mixer (50) arranged between the first gas mixer (7) and the pump (11) and connected with the gas-liquid separator (8) by a decompressing valve (15), and a decompressing mechanism (12) connected with the rear side of the gas-liquid separator (8). The water containing non-dissolved gas mixed by the second gas mixer (50) is decompressed by the decompressing mechanism (12) to generate minuteness air bubbles in the water.
Description
Technical field
The present invention relates to a kind of liquid handling device that uses micro air bubble.
Background technology
In the method for treating liquids that uses ozone, disclose the method for non-patent literature 1 record.Be injected into ozone in the processed water of ozone reaction groove equipment by reducing substances consumption that processed water contained, in the ozone that is injected into, in processed water, do not dissolve and the ozone that arrives in the bubble of the water surface is emitted to atmosphere, and become the ozone exhaust, in the ozone exhaust gas treatment device, decompose.Therefore, be injected into ozone amount in the reactive tank equipment except in order to realize the needed ozone amount of target water quality, also need to comprise the ozone amount that oxidation consumed of reducing substances and do not dissolve and discarded ozone amount.
The ozone treating system that is used for water treatment also is made of pre-processing device, equipment for after-treatment, ozone generating apparatus and ozone exhaust gas treatment device etc. except ozone reaction groove equipment.In ozone generating apparatus, account for the ratio maximum that consumes electric power in the consumption electric power of entire system,, promptly improve ozone utilization rate so on the economy of treatment system improves, need to reduce the ozone generating capacity.Particularly, reduce reducing substances, raising ozone dissolved efficiency in the above-mentioned processed water, it is effective promptly reducing the ozone capacity.
At this, so-called micro air bubble is the about bubble below 50 microns of diameter, according to non-patent literature 2, usually, this regional bubble is because along with the dissolving in of liquid phase and diameter reduces towards periphery of gas in the bubble, so because of this bubble of capillary effect becomes high pressure, high temperature, when eliminating and the high free-radical generating pressure wave of oxidizing force such as hydroxy.In addition, because specific area is big, the rate of climb is little, so the Gas Solubility height in the liquid.
Therefore, in water treatment, use ozone etc. to have under the situation of micro air bubble of gas of oxidizing force, except considering the molten oxidizing force of depositing gas, to consider also that when micro air bubble is eliminated oxidizing forces such as the pressure wave that produces and free radical cause cell membrane, cell membrane, cytoplasm etc. by the possibility of physical damage.
The technology in the past of carrying out water treatment as bubbles such as utilizing ozone, such as patent documentation 1 record, directly inject ozone from the diffuser that is arranged in the ozone contact groove, at this moment reclaim the gas of the ozone that does not contain dissolving, do not utilize from the upper space of contact groove.
In addition, in patent documentation 2, disclose such method, gas is mixed into behind the thick bubble by the pump pressurization, it is injected to the contact groove by the nozzle that reduces pressure (nozzle), thereby injecting gas carry out micro air bubbleization, and inject to the contact groove.In patent documentation 3, disclose such micro-bubble generation device, in the decompression nozzle, make nozzle form the porous plate shape, the hole count that fluid is passed through changes, and revolution speed is carried out conversion control so that the constant pressure of nozzle upstream side, thereby stably produce micro air bubble.
In addition, water treatment herein is meant injects medicament or the gas with oxidizing force, perhaps utilizes the irradiation, filtration of light, electromagnetic wave etc. etc., and utilization such as organic matter in the processed water or microorganism filtration or oxidation Decomposition etc. are removed.
Patent documentation 1: the spy opens the 2004-122105 communique
Patent documentation 2: the spy opens the 2003-117365 communique
Patent documentation 3: the spy opens the 2007-21392 communique
Non-patent literature 1: " ozone handbook, Japanese ozone association, 2004
Non-patent literature 2: " characteristic of water and the new technology of utilizing ", NTS Co., Ltd., 142-146 page or leaf, 2004
In the method for patent documentation 1 record, owing to use diffuser in the injection of ozone, so bubble diameter forms more than the mm dia, dissolved efficiency is low, according to " new technology that new edition ozone utilizes ", three friendly publishing houses, in order to obtain the ozone absorption efficiency of 90% above degree, need the depth of water of about 5m, exist equipment to be difficult to the problem of miniaturization.
In addition, in the method for patent documentation 2 and patent documentation 3 records, in the gas as thick bubble injection, do not kept the state of thick bubble to pass through the decompression nozzle by the gas of the pressurization part dissolved under pressure at pump rear portion, the flow direction contacts groove with the micro air bubble mixing existence that generates.As mentioned above, there is the low problem of dissolved efficiency in the mm dia bubble.In addition, behind the decompression nozzle, when thick bubble contact with micro air bubble, then micro air bubble and thick bubble zoarium can make the containing ratio reduction of the high micro air bubble of dissolved efficiency.In addition, even the water of sneaking in order to improve the ozone absorption efficiency with this micro air bubble and thick bubble injects to the groove that contacts of the decline trip that can increase the holdup time, micro air bubble is accompanied in the upwelling that is produced by the big thick bubble of the rate of climb, arrive micro air bubble bulk storage in atmosphere of the water surface.
Summary of the invention
It is a kind of by reclaiming, utilize not dissolved gas again that the present invention's first purpose is to provide, thereby the utilization ratio of gas is improved, and improves sterilization, removes the method for treating liquids and the device of water treatmenting performances such as look, deodorizing, scrubbing.
It is a kind of by reclaiming, utilize not dissolved gas again that the present invention's second purpose is to provide, thereby the utilization ratio of gas is improved, and reduces the gas use amount, realizes the liquid handling device of economy.
It is a kind of by reclaiming, utilize not dissolved gas again that the present invention's the 3rd purpose is to provide, thereby the formation efficiency of micro air bubble is improved, and is reduced under the thick bubble state from the capacity of processed water surface deviation, realizes the liquid handling device of economy.
It is a kind of by reclaiming, utilize not dissolved gas again that the present invention's the 4th purpose is to provide, thereby can improve the micro air bubble formation efficiency of every pump power, reduces pump power and consume electric power, realizes the liquid handling device of economy.
To achieve these goals, liquid handling device of the present invention is being blended in gas in the water, with the gas that mixes by the pump dissolved under pressure, and its decompression produced in the micro air bubble generation system of micro air bubble, when dissolved under pressure, reclaim undissolved gas, utilize the gas that is reclaimed again.In addition, have the contact groove that makes micro air bubble contact with processed water and react, improve the utilization ratio of gas and carry out water treatment.The generation of micro air bubble also can be used pressurization, cut off mode, cyclone mode etc.The pressure of water that also can the described decompression nozzle of instrumentation uses converter to control the frequency of the motor that gives pump automatically so that above-mentioned constant pressure.
Produce the decompression nozzle of micro air bubble, constitute by porous plate with a plurality of holes or slit and the stream confinement plate that changes its hole count.The change of the hole count of porous plate can be moved along porous plate is parallel by making the stream confinement plate, perhaps can make the rotation of stream confinement plate and carries out.In addition, also can be and mobile porous plate carries out by fixing stream confinement plate.
In addition, the change of the hole count of porous plate also can be by measuring the flow of the water that mixes described gas, with the gas flow that mixes flow divided by water, as the apparent gas liquid ratio of the two-phase flow of inflow pump and obtain, the hole count of change porous plate, the flow of increase and decrease water is so that the value of above-mentioned gas liquid ratio is below the gas liquid ratio high limit of tolerance of pump.
In addition, be provided with second gas mixer that described gas is blended in first gas mixer in the water and mixes described recovery gas in the upstream of the pump of the described gas of dissolved under pressure.The gas mixer and second gas mixer can be with respect to the stream configurations in parallel of the water of the upstream of pump, also can arranged in series, also can before and after configuration.
In addition, be provided for gas with described recovery and be blended in the processed water or be injected into stream in the contact groove, the guiding mechanism of the flow of the gas that adjustment reclaims is set in stream.These flows can be regulated by as described below, by be provided with will be reclaimed the gas hold up vessel (surge tank) of being detained, and by be located between hold up vessel and the gas mixer or hold up vessel and the stream between the injecting mechanism that the contact groove injects on pressure-reducing valve or counterbalance valve keep pressure in the hold up vessel.In addition, also can not use hold up vessel, and utilize the inner space of stream with described pressure-reducing valve or counterbalance valve for the delay of gas.In the contact groove, the injection phase of reclaiming gas in order to prevent the zoarium of bubble, can be the groove at the rear portion of not mixing with micro air bubble, also can be the groove in the front portion that processed water flows into.Under the situation of using ozone,, also can the upstream portion that gas injects the injection phase of the water that contains micro air bubble will be reclaimed in order to remove the ozone-depleting material in the processed water in advance.
In addition, the water of described mist can extract from the contact groove, also can make the water that produces micro air bubble return the contact groove and circulates, and the water of described mist also can supply water from the outside, makes the water that produces micro air bubble directly connect the contact groove.Bubble matter material also can use the gas beyond the ozone.
(invention effect)
According to the present invention, can improve the water treatmenting performance and the economy of the molten liquid handling device of depositing gas and utilizing.In addition, be used for the micro air bubble of liquid handling owing to can efficient well and stably generate, so can improve water treatmenting performance and flow stability.
Description of drawings
Fig. 1 is the structure chart of the liquid handling device of embodiments of the invention 1.
Fig. 2 is the schematic diagram of the decompression structure of nozzle of expression embodiment 1.
Fig. 3 is the schematic diagram of the decompression structure of nozzle of expression embodiment 1.
Fig. 4 is the figure of the ozone utilization ratio of explanation embodiment 1.
Fig. 5 is the figure of the ozone utilization ratio of explanation embodiment 1.
Fig. 6 is the figure of the ozone utilization ratio of explanation embodiment 1.
Fig. 7 is the key diagram about the ozone utilization ratio of embodiment 1.
Fig. 8 is the structure chart as the liquid handling device of embodiments of the invention 2.
Fig. 9 is the structure chart as the liquid handling device of embodiments of the invention 3.
Figure 10 is the structure chart as the liquid handling device of embodiments of the invention 4.
Figure 11 is the structure chart as the liquid handling device of embodiments of the invention 5.
Figure 12 is the structure chart as the liquid handling device of embodiments of the invention 6.
Figure 13 is the structure chart as the liquid handling device of embodiments of the invention 7.
Figure 14 is the structure chart as the liquid handling device of embodiments of the invention 8.
Figure 15 is the structure chart as the liquid handling device of embodiments of the invention 9.
Description of reference numerals
1,3 processed waters
2 ozone gas
4 handle water
5 contact grooves
6,9,10,13,32,40 streams
7,50 gas mixers
8 gas-liquid separators
11 pumps
12 decompression nozzles
14 surge tanks
15 pressure-reducing valves
16 counterbalance valves
21,52 controllers
22,54,55 flowmeters
23,24,25,56,66,70 flow rate regulating valves
30 oxygen rich gas makers
31 oxygen-enriched air
33 ozone generators
41,42 injection phases
43 demarcation strips
51 pressure transmitters
53 converters
57 valves
58 conbined pressure gauges
59 handles
60 porous plates
61 stream confinement plates
62 holes
63 pipelines
64 edge parts
65 Handle axis
67 supply water
68 micro air bubble water
69 gases
The specific embodiment
Embodiments of the invention 1 describe with reference to Fig. 1～Fig. 7.Fig. 1 is the structure chart of the liquid handling device of embodiments of the invention 1, and Fig. 2, Fig. 3 are the profile of expression decompression nozzle and the schematic diagram in the observed pipe of upstream side, and Fig. 4～7th is about the key diagram of ozone utilization ratio.
As shown in Figure 1, the liquid handling device of present embodiment comprises: the gas mixer 7 that is connected with the stream 6 of the stream 13 of the bottom of being located at contact groove 5 described later and never illustrated ozone generating-device ozone supply gas 2 and processed water 1 is mixed with the ozone gas that is imported by stream 6; Be connected with gas mixer 7, mix the gas mixer 50 of the gas that reclaims by gas-liquid separator 8 described later; Be connected with gas mixer 50, carry the pump 11 of the processed water 1 that in gas mixer 7,50, mixes with ozone gas 2 and gas; Be connected and separate the gas-liquid separator 8 of undissolved bubble with pump 11; The decompression nozzle 12 that is connected with gas-liquid separator 8 and processed water 1 is reduced pressure; The contact groove 5 that is connected with decompression nozzle 11; The surge tank 14 that is connected and makes the bubble delay that separates with gas-liquid separator 8; Be located at the counterbalance valve 16 that connects in surge tank 14 and the stream 10 that contacts groove 5; Be located at the pressure-reducing valve 15 in the stream 9 that connects surge tank 14 and gas mixer 50.No matter pressure-reducing valve 15 is meant that generally how and the valve that keeps the secondary side constant pressure and carry out exhaust simultaneously primary side pressure.Counterbalance valve 16 also claims safety valve, be meant when primary side pressure surpasses threshold value or the pressure differential of primary side and secondary side when surpassing threshold value to the valve of secondary side exhaust.
At this, the path that is made of stream 13, gas mixer 7, gas mixer 50, pump 11, decompression nozzle 12 is called the micro air bubble generation system, and the path that is made of gas-liquid separator 8, surge tank 14, stream 9, pressure-reducing valve 15 is called gas recovery system.In the path that constitutes by gas-liquid separator 8, surge tank 14, stream 10, counterbalance valve 16, carry out bulk storage to contact groove 5.
Contact groove 5 is injected processed water 3, and dispensing is handled water 4.The 5 interior formation of contact groove are separated by demarcation strip, the structure that processed water contacts with ozone and makes a circulation in a plurality of grooves simultaneously.This contact groove 5 also can be applicable to swimming pool type, U word cast, concentric circles tubular, other sink structures.In addition, the gas that forms micro air bubble is not limited to ozone gas, also can use air, carbon dioxide, other gases.
In addition, the undersurface any part of groove 5 can be selected to contact in the position of drawing water of stream 13.In addition, though not shown, preferred measurement gas flow.
The gas-liquid two-phase flow that is mixed with ozone gas is pressurizeed by pump 11, a part of dissolved under pressure of ozone gas, remaining thick bubble, the inflow gas-liquid separator 8 of becoming.In gas-liquid separator 8, there is not the thick bubble of dissolved under pressure for example to separate upward by Gravity Separation, separated gas flows into surge tank 14.
The water of dissolving pressurized ozone gas is depressurized by decompression nozzle 12 time and bubbles, and forms the ozone micro air bubble.This ozone micro air bubble flows into contact groove 5, produce processed water 3 sterilization, deodorizing, remove water treatment effect such as look.At this, the water of mist also can supply water from the outside, makes the water that produces micro air bubble and contacts groove 5 and directly connect.
On the other hand, surge tank 14 forms and is connected with the gas mixer 5 of the suction side of being located at pump 11 in stream 9 via pressure-reducing valve 15, all or part of of gas in the surge tank 14 returns gas mixer 50, to the reinject structure of the ozone that reclaimed by surge tank 14 of processed water.At this, gas mixer 50 and gas mixer 7 are similarly, for will be in the processed water that in stream 13, flows the equipment of mist, for example can on the pipeline that processed water flowed, converge the gas phase pipe arrangement with the T shape, also can mix gas phase, also can use injector from diffuser, porous plastid.Gas mixer 7 and gas mixer 50 can in parallel be configured on the stream of upstream of pump 11, also can be arranged in series on the stream of upstream of pump 11.
Reinjecting of the gas that is reclaimed also can form the structure that stream 9 is connected with the stream 6 that is communicated with gas mixer 7.On the other hand, the pressure of the supply pressure of ozone gas 2 that can be by stream 6 and the gas that reinjects of stream 9 poor makes the flow of the supply flow rate of ozone gas 2 and the gas that reinjects produce change.Therefore, as shown in this embodiment, preferably with respect to the processed water that flows in stream 13, difference is mist independently.
In the surge tank 14, stream 10 is connected with contact groove 5 via counterbalance valve 16, the processed water bulk storage of the ozone gas that flows out in counterbalance valve 16 in contact groove 5.Its dissolved efficiency of thick bubble of bulk storage is low, but with above-mentioned micro air bubble similarly, can produce processed water 3 sterilization, deodorizing, remove water treatment effect such as look.
In gas-liquid separator 8 during separate bubbles, because bubble intermittently flows in the gas-liquid separator 8, so the pressure of gas separated, flow change.When it is flowed directly in the gas mixer 50, then gas is the gas liquid ratio change with respect to the ratio of the processed water that flows in stream 13, produces the idle running or the flowing instability of pump 11.
Because pressure-reducing valve 15 is set on stream 9, in pressure-reducing valve 15, the secondary side constant pressure is so can give gas mixer 50 with the ozone gas of surge tank 14 with constant pressure.Thus, the gas flow that flows to pump 11 from gas mixer 7 and gas mixer 50 is constant, and pump 11 can not dally in being involved in of gas, and flowing of processed water is stable.When the thick bubble that separates in gas-liquid separator 8 temporarily increases, under the excessive situation of the pressure in the surge tank 14, owing to make superfluous ozone gas bulk storage in contact groove 5 by counterbalance valve 16, so the maintenance of the pressure of surge tank 14 is constant.
Because as mentioned above, the recovery system of gas is set, utilize again, so can give gas mixer 50 with constant flow, can prevent the reinject change of flow of gas by the gas that gas-liquid separator 8 reclaims.Thus, the gas liquid ratio of gas mixer 7 can be remained on pump 11 can turn round and can access high efficiency maximum or remain in the high scope.
Can turn round and can access high efficiency maximum or in high scope and stably generate micro air bubble for gas liquid ratio being remained on pump 11, the pressure of the upstream side of decompression nozzle 12 is kept constant, and gas liquid ratio is remained in the suitable scope is effective.In addition, make the micro air bubble of decompression nozzle 12 generate state, be that the fluid of hole 62 peripheries of nozzle described later remains unchanged with respect to the gas liquid ratio of the change of processed water flow be effective.
As Fig. 2, shown in Figure 3, by adopting the variable nozzle of hole 62 numbers, the aperture is not changed and adjust the pressure loss of spray nozzle part, so can adjust the pressure and the flow of the pump 11 of micro air bubble generative process.Thus, the constant diameter of the micro air bubble that generates can be kept, high dissolved efficiency can be accessed.In addition, the gas liquid ratio in the gas mixer 7 can be remained on pump 11 can turn round, can access in the high efficiency scope.In addition, when decompression nozzle 12 was blocked, the hole count of offering by increase can replace the hole stopped up with other holes, so can make the flow of the processed water that generates micro air bubble keep constant.
The change of the hole count that porous plate is offered can be carried out along parallel the moving of porous plate by making the stream confinement plate, also can rotate the stream confinement plate and carry out.In addition, also can be and mobile porous plate carries out by fixing stream confinement plate.In addition, the generation of micro air bubble can be used decompression, cuts off mode, cyclone mode etc.
Then, with reference to Fig. 4～Fig. 7 illustrate gas-liquid separator 8 thick bubble recovery and from the reflooded effect of gas mixer 50 to processed water.
Fig. 4 schematically shows the generation state of the micro air bubble in the decompression nozzle 12 under the situation of not using gas-liquid separator 8.In pump 11 with the water of ozone gas dissolved under pressure and the thick ozone bubbles that do not have a dissolved under pressure by decompression nozzle 12.Micro air bubble is owing to mainly generate under the decompression bubble effect of the water of gases dissolved under pressure, so thick bubble can not become micro air bubble.Because the rate of climb of thick bubble is fast,, break away from from the gas-phase space of the water surface to top of processed water so flow into behind the contact groove at once than the faster rising of micro air bubble.Therefore, as shown in Figure 6, the water treatment efficiency of ozone gas reduces.In Fig. 6, molten part of depositing has the water treatment effect in the injecting gas, according to the experiment gained, supposes that the molten rate of depositing of thick bubble illustrates for about 50%.
On the other hand, Fig. 5 schematically shows the generation state of the micro air bubble in the decompression nozzle 12 under the situation of using gas-liquid separator 8.The ozone gas of the dissolved under pressure in pump 11 becomes micro air bubble when by decompression nozzle 12, do not have the thick ozone bubbles of dissolved under pressure to be separated and return gas mixer 50, in the processed water before the upstream side of pump 11 is re-introduced into pressurization by gas-liquid separator 8.Thus, can be in the scope of not idle running in pump 11 with high gas liquid ratio with the ozone gas dissolved under pressure, prevent that thick bubble from flowing into decompression nozzle 12.Therefore, as shown in Figure 7, can reduce ozone gas amount, improve the water treatment efficiency of ozone gas from surface deviation.At this, gas liquid ratio is by the gas flow that will the mix flow divided by water, obtains as the apparent gas liquid ratio of the two-phase flow of inflow pump 11.
When reducing ozone gas flow, the flow that directly injects contact groove 5 reduces.The flow that ozone gas flow reduces to thick bubble reaches zero, and forms suitable ozone gas flow, thereby the luminous efficiency of micro air bubble can be brought up to roughly 100%.In this case, the ozone extraction flow from surface deviation can be reduced significantly, though not shown, can alleviate the load for the treatment of apparatus of ozone exhaust of the upper space of contact groove 5.In this case, the ozone injection rate of processed water is adjusted by concentration of ozone.
According to present embodiment,,, reduce the ozone use amount so can improve water treatment efficiency owing to the generation ratio that can increase micro air bubble reduces ozone capacity from surface deviation.Thus, the effect of the effect of the economy raising of realization liquid handling device and water treatmenting performance raising.
(embodiment 2)
According to Fig. 8 embodiments of the invention 2 are described.Fig. 8 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, in the micro air bubble generation system of the liquid handling device of embodiment 1,, be provided with the pressure transmitter 51 of instrumentation pressure, pressure transmitter 51 is connected with controller 52, converter 53 at decompression nozzle 12 upstream sides in pump 11 downstreams.Converter 53 is connected with pump 11, with the rotating speed of control pump 11.
In controller 52, import goal pressure, in controller 52, carry out for example PID control of converter 53, so that the upstream pressure of decompression nozzle 12 maintains desired value consistently.Thus, can make the rotation speed change of pump 11, make the pressure of decompression nozzle 12 upstreams remain on the constant set value by converter 53.
Its result can prevent the pressure of the pump 11 in the micro air bubble generative process and the change of flow, so the diameter of the micro air bubble that generated can be remained constantly, obtains high dissolved efficiency.In addition, make that owing to controlling pressure is steady state value,, can make the recovery stability of flow that does not dissolve bubble, can keep high value, improve the micro air bubble formation efficiency of every pump power so can prevent the gas-liquid flow.In addition, owing to can prevent the change of pressure and flow, thus can set the pressure of pump 11 lower, can low pump power and consumption electric power.
According to present embodiment, owing to can increase the generation ratio of micro air bubble, reduce ozone capacity from surface deviation, so can improve water treatment efficiency, reduce the ozone use amount.In addition, the pressure of pump can be set to such an extent that reduce, can reduce pump power and consume electric power.Thus, can realize the effect that the economy of effect that water treatmenting performance improves and liquid handling device improves.
(embodiment 3)
According to Fig. 9 embodiments of the invention 3 are described.Fig. 9 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, in the micro air bubble generation system of the liquid handling device of embodiment 2, the flowmeter 54 of chase solution body and function on stream 13 appends the flowmeter 55 that gas is used on stream 6.The flow of the processed water that instrumentation extracts from contact groove 5 in flowmeter 54, the flow of the ozone gas 2 of instrumentation supply gas blender 7 in flowmeter 55 is so can precision calculate gas liquid ratio in the gas mixer 7 well.
Thus, can adjust the hole count of offering of decompression nozzle 12 this gas liquid ratio is remained on the mode that can access in the pump 11 in high efficiency maximum or the higher range.At this, pump 11 can access high efficiency gas liquid ratio for the idle running of pump for example or consume the not gas liquid ratio of the big value in the scope of bigger increase of electric power.Owing to can suitably set gas liquid ratio, so with the flow of ozone gas 2 similarly, with respect to reclaim by gas mixer 50, reflooded gas flow, can throttling by the processed water flow of pump 11 pressurizations, so can reduce the pump power of every micro air bubble growing amount.In addition, under the situation that decompression nozzle 12 stops up, owing to the constant flow that reduces that in structure shown in Figure 9, keep-ups pressure, so can hold the blocked state of decompression nozzle 12 by monitor traffic meter 54.
According to present embodiment, can keep-up pressure constant and must be lower with the flow set of pump, can reduce pump power and consume electric power.In addition, owing to can survey the obstruction of decompression nozzle, can realize the economy of liquid handling device and the effect that reliability improves.
(embodiment 4)
According to Figure 10 embodiments of the invention 4 are described.Figure 10 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, in the micro air bubble generation system of the liquid handling device of embodiment 3,, flow rate regulating valve 66 is appended in the upstream of gas mixer 50 in the downstream of the pressure-reducing valve 15 of stream 9.
In the present embodiment,, can precision adjust well from gas mixer 50 to the reflooded ozone gas of processed water by pressure-reducing valve 15 and flow rate regulating valve 66.In pressure-reducing valve 15, can adjust the valve of secondary side pressure by using, and can in wideer range of flow, carry out high-precision flow adjustment.
According to present embodiment, owing to can improve the recovery of ozone gas, the setting accuracy of the flow that reinjects, so can must be lower with the flow set of pump.Thus, owing to can reduce pump power and consume electric power, realize the effect that the economy of liquid handling device improves.
(embodiment 5)
According to Figure 11 embodiments of the invention 5 are described.Figure 11 is the structure of the liquid handling device of present embodiment.In the present embodiment, remove pressure-reducing valve 15 from the micro air bubble generation system of the liquid handling device shown in the embodiment 4, and surge tank 14 forms such structure, in stream 9, be connected with the gas mixer 50 of the suction side of being located at pump 11 via flow rate regulating valve 66, all or part of of gas in the surge tank 14 returns gas mixer 50, can reinject by the ozone gas of surge tank 14 recovery to processed water.In the surge tank 14, via counterbalance valve 16 stream 10 is connected with contact groove 5, the processed water bulk storage of the ozone gas that flows out in counterbalance valve 16 in contact groove 5, compare its dissolved efficiency with micro air bubble low, but can produce the sterilization, deodorizing of processed water 3, except that water treatment effects such as looks.
On the other hand, make the ozone gas of recovery pass through flow rate regulating valve 66 from surge tank 14 inflow gas blenders 50.Owing to do not use pressure-reducing valve 15, so can not be to gas mixer 50 with constant pressure delivery of ozone gas, but because the maximum pressure of surge tank 14 by counterbalance valve 116 restrictions, is the value of passing through by the pressure decision of counterbalance valve 16 restrictions so pass through the flow of inflow gas blender 50.Like this, owing to have restriction, so can not dallying, pump 11 can make flowing of processed water stable from the gas flow of gas mixer 7 and gas mixer 50 inflow pumps 11.
According to present embodiment, by the pressure-reducing valve of flow rate regulating valve substitute structure complexity, high price, thereby can prevent equipment fault, and reduce installation cost.Therefore, can realize the reliability of liquid handling device and the effect that economy improves.
(embodiment 6)
According to Figure 12 embodiments of the invention 6 are described.Figure 12 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, in the micro air bubble generation system of the liquid handling device shown in the embodiment 4, on the stream between gas mixer 7 and the gas mixer 50, append valve 57, append conbined pressure gauge 58 in the upstream of gas mixer 50 in the downstream of valve 57.At this, so-called conbined pressure gauge is meant the pressure gauge that can measure positive and negative both pressure.
In the running of the liquid handling device of present embodiment,, adjust valve 57 so that the indicated value of conbined pressure gauge 58 is a standard value to the pressure established standards value of measuring by conbined pressure gauge 58.Thus, no matter operating condition how, makes the pressure of gas mixer 50 constant with respect to the secondary side pressure maintenance of pressure-reducing valve 15, so the ozone gas flow of inflow gas blender 50 can be remained on constant.Therefore, it is stable that the gas liquid ratio that can accommodate that can holding pump 11, micro air bubble generate flowing of circulation.
According to present embodiment, because generating flowing of circulation, stablizes micro air bubble, so realize the effect that the reliability of liquid handling device improves.
(embodiment 7)
According to Figure 13 embodiments of the invention 7 are described.Figure 13 is the structure chart of the liquid handling device of present embodiment.Present embodiment is similarly to constitute with liquid handling device shown in Figure 12, but is applicable to the example beyond the contact groove, replaces from contact groove 5 and flows out processed water 1, and supply water 67, carries out water distribution 68.
As shown in figure 13, the micro air bubble generation system that is made of the stream 6 of supply gas 69, supply water 67 stream 13, gas mixer 7, gas mixer 50, pump 11, decompression nozzle 12, the gas recovery system that is made of gas-liquid separator 8, surge tank 14, stream 9, pressure-reducing valve 15 and the gas extraction system that is made of stream 10, counterbalance valve 16 are set.Preferably,, pressure transmitter 51, controller 52, the converter 53 of the pressure of instrumentation decompression nozzle 12 upstreams is set, the flowmeter 54 that liquid is used is set on stream 13, the flowmeter 55 that gas is used is set on stream 6 in the downstream of pump 11.In addition, on the stream between gas mixer 7 and the gas mixer 50, valve 57 is set, in the upstream of gas mixer 50 conbined pressure gauge 58 is set in the downstream of valve 57.
Supply with the water supply 67 of stream 13 and never illustrated gas supply device gas supplied 69 by gas mixer 7 mixing, become gas-liquid two-phase flow and in stream 13, flow through.This gas-liquid two-phase flow is pressurizeed by pump 11, a part of dissolved under pressure of gas, and remaining gas becomes thick bubble, flows in the gas-liquid separator 8.In gas-liquid separator 8, there is not the thick bubble of dissolved under pressure for example to separate upward by gas-liquid separator 8, separated gas flows in the surge tank 14.The molten water of depositing ozone gas is depressurized by decompression nozzle 12 time and bubbles in gas-liquid separator 8, forms micro air bubble.This micro air bubble forms micro air bubble water 68 with water supply 67, and to water distribution everywhere.
On the other hand, surge tank 14 forms such structure, be connected on stream 9 with the gas mixer 50 of the suction side of being located at pump 11 via pressure-reducing valve 15, all or part of of the gas in the surge tank 14 returns gas mixer 50, and processed water is reinjected by the ozone gas of surge tank 14 recovery.
On surge tank 14, be connected with the stream 10 of counterbalance valve 16, the end atmosphere opening of stream 10, the ozone gas that flows out in counterbalance valve 16 is emitted in atmosphere.At this, when gas 69 is under the situation of pernicious gas, does not make stream 10 atmosphere openings and gas is carried out resolution process.When gas 69 is under the situation of valuable gas, does not make stream 10 atmosphere openings and gas is utilized again.
Because can be by the pressure-reducing valve 15 that is connected with surge tank 14, give gas mixer 50 with ozone gas with constant pressure, so it is constant that the gas flows that flow to pump 11 from gas mixer 7 and gas mixer 50 become, pump 11 can not dally and make flowing of processed water stable.When the thick bubble that is separated by gas-liquid separator 8 temporarily increases, under the situation that the pressure in the surge tank 14 becomes excessive, superfluous gas is emitted in atmosphere by counterbalance valve 16, the pressure of surge tank 14 remains on constant.
Preferably, in pump 11 downstreams, pressure transmitter 51, controller 52, the converter 53 of the pressure of instrumentation decompression nozzle 12 upstreams is set.By controller 52 is imported goal pressure, thereby can being undertaken converter 53 for example by the instruction that comes self-controller 52 so that the constant pressure ground of decompression nozzle 12 upstreams maintains the mode of desired value, PID controls, make the rotation speed change of pump 11, keeping the pressure of decompression nozzle 12 upstreams is the constant set value.
Its result owing to can prevent the pressure of the pump 11 in the micro air bubble production process and the change of flow, so can keep the constant diameter of the micro air bubble that generates, obtains high dissolved efficiency.In addition, by constant pressure, the change of the gas-liquid flow in the time of can preventing to reclaim, utilize dissolved gas not improves the micro air bubble formation efficiency of every pump power.In addition, owing to can prevent the change of pressure and flow,, can reduce pump power and consume electric power so can set the pressure of pump 11 low.
According to present embodiment, owing to can increase the generation ratio of micro air bubble, so can reduce the use amount of gas.In addition, can set the pressure of pump lower, can reduce pump power and consume electric power.Thus, can realize the effect of the economy raising of liquid handling device.
(embodiment 8)
According to Figure 14 embodiments of the invention 8 are described.Figure 14 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, form such structure, on the basis of embodiment 7, pull down pressure-reducing valve 15, surge tank 14 is connected on stream 9 with the gas mixer 50 of the suction side of being located at pump via flow rate regulating valve 66, all or part of of gas in the surge tank 14 returns described gas mixer 50, and the ozone gas that is reclaimed by surge tank 14 can reinject and supply water in 67.Make stream 10 atmosphere openings from surge tank 14 via counterbalance valve 16, will in counterbalance valve 16, in atmosphere, emit by effluent air.
On the other hand, the gas that is reclaimed flows to gas mixer 50 from surge tank 14 by flow rate regulating valve 66.Since do not use pressure-reducing valve 15, thus can not be with constant pressure to gas mixer 50 delivery of ozone gases, and still the maximum pressure owing to surge tank 14 is limited by counterbalance valve 16, so there is the upper limit by counterbalance valve 16 decisions in the flow of inflow gas blender 50.Thus, can impose restriction, pump 11 can not be dallied and make flowing of processed water stable gas flow from gas mixer 7 and gas mixer 50 inflow pumps 11.
According to present embodiment, can be complicated and the pressure-reducing valve of high price with the flow rate regulating valve substitute structure, thus can prevent equipment fault, and can reduce installation cost.Therefore, can realize the reliability of liquid handling device and the effect that economy improves.
(embodiment 9)
According to Figure 15 embodiments of the invention 9 are described.Figure 15 is the structure chart of the liquid handling device of present embodiment.In the present embodiment, form such structure, on the basis of embodiment 7, replace counterbalance valve 16 and flow rate regulating valve 70 is set, surge tank 14 is connected with the gas mixer 50 of the suction side of being located at pump in stream 9 with flow rate regulating valve 66 via pressure-reducing valve 15, all or part of of gas in the surge tank 14 returns gas mixer 50, can be to 67 ozone gas that reinject and reclaimed by surge tank 14 that supply water.Stream 10 from surge tank 14 via flow rate regulating valve 70 atmosphere opening, effluent air is emitted in atmosphere in stream 10.Flow rate regulating valve 70b is a little by opening.
Gases in the surge tank 14 are kept by flow rate regulating valve 70 and pressure-reducing valve 15, and the pressure when surge tank 14 in improves, then from the amount increase of flow rate regulating valve 70 by the stream 10 and the gas of emitting to atmosphere.On the other hand, the gas of recovery from surge tank 14 by pressure-reducing valve 15 and flow rate regulating valve 66 and inflow gas blender 50.In the present embodiment, owing to do not use counterbalance valve 16, so the pressure of surge tank 14 can not be kept constant, but the secondary side pressure of pressure-reducing valve 15 is retained as steady state value by the function of pressure-reducing valve, so, then the flow of inflow gas blender 50 can be remained steady state value if the pressure of surge tank 14 does not reduce.Thus, be held constant from the gas flow of gas mixer 7 and gas mixer 50 inflow pumps 11, pump 11 can not dally and make flowing of processed water stable.
According to present embodiment, can be with the counterbalance valve of flow rate regulating valve substitute structure complexity, thus can prevent equipment fault, and reduce installation cost.Therefore, can realize the reliability of liquid handling device and the effect that economy improves.
Claims (15)
1, a kind of liquid handling device is characterized in that,
Have: with the water of supply and first gas mixer of gas mixing; The pump that the gas-liquid two-phase flow that gets by this first gas mixer mist is pressurizeed; Water by this pump pressurization is reclaimed the gas-liquid separator of undissolved gas; Be located between described first gas mixer and the described pump second air and liquid mixer that is connected with described gas-liquid separator via pressure-reducing valve; The mechanism of decompressor that is connected with the back trip side of described gas-liquid separator,
Wherein, the water that mixes described undissolved gas by described second gas mixer is by described mechanism of decompressor decompression and produce micro air bubble in water.
2, a kind of liquid handling device is characterized in that,
Have: with the water of supply and first gas mixer of gas mixing; The pump that the gas-liquid two-phase flow that gets by this first gas mixer mist is pressurizeed; Water by this pump pressurization is reclaimed the gas-liquid separator of undissolved gas; Be located between this first gas mixer and the described pump second air and liquid mixer that is connected with described gas-liquid separator via pressure-reducing valve; The stream that the part of the gas that is connected with described gas-liquid separator and is used for via counterbalance valve being reclaimed by described gas-liquid separator is emitted; The mechanism of decompressor that is connected with the back trip side of described gas-liquid separator,
Wherein, the water that mixes described undissolved gas by described second gas mixer is by described mechanism of decompressor decompression and produce micro air bubble in water.
3, a kind of liquid handling device is characterized in that,
Have: with the water of supply and first gas mixer of gas mixing; The pump that the gas-liquid two-phase flow that gets by this first gas mixer mist is pressurizeed; Water by this pump pressurization is reclaimed the gas-liquid separator of undissolved gas; Be located at second gas mixer of the suction side of described pump; Be used to make the gas that reclaims by described gas-liquid separator to return the stream of described second gas mixer via pressure-reducing valve; Second stream of emitting in the part of the pressure-reducing valve upstream side branch of this stream and the gas that will in described gas-liquid separator, reclaim via counterbalance valve; The mechanism of decompressor that is connected with described gas-liquid separator,
Wherein, the water of the undissolved gas of mixed described recovery produces micro air bubble by described mechanism of decompressor decompression in water.
4, a kind of liquid handling device is characterized in that,
Have: with the water of supply and first gas mixer of gas mixing; The pump that the gas-liquid two-phase flow that gets by this first gas mixer mist is pressurizeed; Water by this pump pressurization is reclaimed the gas-liquid separator of undissolved gas; The surge tank that is connected with this gas-liquid separator; Be located at second gas mixer of the suction side of described pump; Be used to make the interior gas of described surge tank to return the stream of described second gas mixer via pressure-reducing valve; The mechanism of decompressor that is connected with described gas-liquid separator,
Wherein, the water of the undissolved gas of mixed described recovery produces micro air bubble by described mechanism of decompressor decompression in water.
5, a kind of liquid handling device is characterized in that,
Have: gas is mixed in first gas mixer in the water; The pump that the water that gets by this first gas mixer mist is pressurizeed; Water by this pump pressurization is reclaimed the gas-liquid separator of undissolved gas; The surge tank that is connected with this gas-liquid separator; Be located at second gas mixer of the suction side of described pump; Be used to make the interior gas of described surge tank to return the stream of described second gas mixer; Emit second stream of the part of gas via counterbalance valve from described surge tank; The mechanism of decompressor that is connected with described gas-liquid separator,
Wherein, the water of the undissolved gas of mixed described recovery produces micro air bubble by described mechanism of decompressor decompression in water.
6, liquid handling device as claimed in claim 5 is characterized in that,
Be provided with pressure-reducing valve at the stream that is used for making gas in the described surge tank to return described second gas mixer.
7, as each the described liquid handling device in the claim 1～6, it is characterized in that,
Be provided with the contact groove that processed water is carried out water treatment, the micro air bubble that is produced in water by the decompression of the described mechanism of decompressor is contacted with the described processed water that contacts in the groove and react.
8, as each the described liquid handling device in the claim 1～6, it is characterized in that,
The water that mixes described gas is the water that extracts in the processed water in described contact groove,
The stream that has the described gas mixer of current direction that makes this extraction in this liquid handling device.
9, as each the described liquid handling device in the claim 1～8, it is characterized in that,
Be provided with the described pump of control rotating speed converter and in the downstream of described pump promptly in the metrological service of the pressure of the stream interval measure fluid of the upstream of the described mechanism of decompressor, constant by the rotating speed of the described pump of convertor controls being controlled to be by the pressure that this metrological service is metered into.
10, as each the described liquid handling device in the claim 1～9, it is characterized in that,
The described mechanism of decompressor is the decompression nozzle.
11, liquid handling device as claimed in claim 10 is characterized in that,
Described decompression nozzle is the porous plate that is provided with a plurality of holes or slit.
12, as each the described liquid handling device in the claim 1～9, it is characterized in that,
The described mechanism of decompressor is by the porous plate with a plurality of holes or slit and make hole count or the stream confinement plate of the area change in slit constitutes.
13, liquid handling device as claimed in claim 12 is characterized in that,
The end face of described stream confinement plate is cut into acute angle with respect to described porous plate surface.
14, as each the described liquid handling device in the claim 1～9, it is characterized in that,
At least be provided with a liquid phase flowmeter in stream interval from the downstream of swimming over to the described mechanism of decompressor of described gas mixer.
15, as each the described liquid handling device in the claim 1～9, it is characterized in that,
Be connected with Ozone generator at described gas mixer, to supply with ozone gas as described gas.
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| CN101618296B (en) | 2012-04-25 |
| JP4547445B2 (en) | 2010-09-22 |
| JP2010012399A (en) | 2010-01-21 |
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